| Literature DB >> 33669147 |
Xing Zhang1, Ling-Yi Shen2, Qi-Long Zhang1,2, Xian-Jiong Yang2, Ya-Li Huang2, Carl Redshaw3, Hong Xu1,2.
Abstract
An aniline-functionalized naphthalene dialdehyde Schiff base fluorescent probe L with aggregation-induced enhanced emission (AIEE) characteristics was synthesized via a simple one-step condensation reaction and exhibited excellent sensitivity and selectivity towards copper(II) ions in aqueous media with a fluorescence " turn-off " phenomenon. The detection limit of the probe is 1.64 × 10-8 mol·L-1. Furthermore, according to the results of the UV-vis/fluorescence titrations, Job's plot method and 1H-NMR titrations, a 1:2 stoichiometry was identified. The binding constant between L and Cu2+ was calculated to be Ka = 1.222 × 103. In addition, the AIEE fluorescent probe L could be applied to detection in real water samples with satisfactory recoveries in the range 99.10-102.90% in lake water and 98.49-102.37% in tap water.Entities:
Keywords: AIEE; copper(II) ion; fluorescent probe; synthesis; water detection
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Year: 2021 PMID： 33669147 PMCID： PMC7956479 DOI： 10.3390/molecules26051233
Source DB: PubMed Journal: Molecules ISSN： 1420-3049 Impact factor: 4.411